4.5" DTH "HP" Hammer
RH45R9HP - Uses 340 shank DTH Bit

Designed for drilling 4.5" and larger holes.

Features

- Designed for blast hole drilling but certainly not limited to blast holes. 
- Wearsleeve is reversible.   
- The piston is the only moving part making this hammer very reliable.
- All external parts are hardened to resist wear.
- Designed for maximum penetration while using minimal fuel consumption.
- Still utilizes long proven piston design.
- All parts are made from US Certified Steel.

Download RH45R9HP Hammer Manual.

Value	English	Metric
Outside Diameter	4 inch	101.6 mm
Overall Length   (without bit)	40.7 inch	1034mm
Operating Length (API shoulder to bit face)	40.9 inch	1039mm
Total Weight	112 lbs	50 kg
Bore Size	3.28 inch	83.3 mm
Piston Weight	22 lbs	10 kg
Drillpipe Connection *	2 3/8 Reg API pin up	2 3/8 Reg API pin up
Wrench Flats	2.95 inch	75 mm
Hole Size Range	4 inch - 5.125 inch	114 mm - 130 mm
Bit Shank	340	340
Min Air Volume Required **	150 cfm	4.5 cmm
Max Operating Pressure	500 psi	34 bar

​* Other connections available upon request
** Hammer will run on less volume but penetration rates will be       significantly slower.